Air cleaner



outwardly therefrom. The bottom edge of thev cover is rolled, as at 6 l, to form a reinforcing bead.

The horizontal element 59 of the upper step in the side Wall of the cover is seated on the lip 52 on the filter member. Consequently, whenthe wing nut 51 is tightened the filter member and the members 39--40 and 45-41 are `clamped lfirmly'fA` D ber. This gives a construction which is simpler between the bowl-shaped member 36 and they.A

cover and the several elements of the air cleaner are thus held firmly together; The short vertical/' portion of the side wall of the cover immediately below the element 59 serves .to center. the cover.,;.

Before the air cleaner is put into use the annu-'v lar receptacle defined by the center tube 33 and the bowl-shaped member 36 is filled withoil orsome other suitable liquid 4| to the level of the bead 31 and the filter-:material 5| is thoroughly wetted with the same liquid.-

The air cleaner shown in Figures 1 and 2 was designed to be installedon.an internal combustion engine equippedwith a dow-ndraft carburetor with the enlarged portion; of its center tube telescoped over the upper end oftheair intake-.tube of the'carburetor. When.theair cleaner is so i installed and the engine is operating air enters the air cleaner under the lower part ofthe cover 58, then flows through the holes43 into the tapered channel Aformed between the two downwardly directed surfaces and 39 vwhich 'direct it toward and increase thevelocityat which it strikes the surface oftheoil in the sump. The'air i is then deflected upwardly by the oil surface, leav ing in the oil the heavier dirt :particles and picking up drops of oil, and then passes through the openings 48 and then 54 to contact-the filter material 5| whichremoves the oil and the remain-v.

ing dirt particles. Theair, thus cleaned, .then leaves the lter member through the openings 53 and passes into 4the center tube 33- and, thence, into the carburetor and cylinders of the engine.

The oil carried up into the ltermember will;I

keep the filtermaterial coated with oil and the dirt which is still in the air passing therethrough will adhere to the oil soaked material. The ex,-`

cess oil and the dirt in itwill flow back to the sump by running down the slanting sides of the inverted frusto-conical element of the member 45 and out of the openings 48. I( The dirt .will settle to the bottom of the sump and thus go out of circulation. Thus the ltermaterial is kept wetted and washed While the enginev on whichthe airI cleaner is installed is operating. The element 41 of the member 45-41 serves to limit the amount of oil carried by the air into the lter member 49 and thus to obviate pull-over of oil from the air cleaner into the. carburetor. and engine.

jTo disassemble the aircleaner. shown in Fig- 4ures 1 and 2, the wing nut 51 is lfirst removed which allows the cover 58 .to be removed. AThe filter means may thenbe liiiedircm the end of the center tube 33 and cleaned. If it is desired to clean the sump alsoth'e assembly 39-40-45-41 may be removed from the body. 33.-.36 of the. air cleaner and the latter disengaged from the carburetor air intaketube and cleaned.

The modification shown in Figures 3 and 4 is similar to that shown in Figures l and 2 but differs from it in several respects. First, the member 39-49 has been eliminated and the bowlshaped member modified to providea; cylindrical section .in which the air intake openings 4 3 are at their outer edges and the upright frustoconi cal element of the member 45-41 modified at its inner edge to provide a seat for the filter memand embodies less parts.

' -4 Before the air cleaner shown in Figures 3 and 4 is put into use the annular receptacle defined by 'the center tube and bowl-shaped member included in it is filled with oil or some other suitable Yliquid to the level indicated in the drawing vand the filter material 5| thoroughly wetted with the same liquid. The operation of the air cleaner shown in Figures 3 and 4 is substantially the same and its mode of disassembly similar to that .of the air cleaner shown in Figures 1 and 2 except in that the member 45-41 does not have to be removed from the body separately from the .filter assembly and there are, consequently, less parts to be handled.

This application is Aa continuation of my application Serial No. 468,767, filed December 12, 1942, which is a division of my application Serial N0. 740,420, led August-18, 1934, Which has matured into Patent No. 2,304,829, dated December ,15, 1942. My application Serial No. 468,767 was .e abandoned after this application was led. I claim:

l. In an air cleaner, a receptacular body, a cover for the body shaped generally like an inverted cup, a filter member which is separable from the body and the cover and disposed within the latter clamped between the outer walls of the l, body and the cover, and an air inlet orifice in the body below the lter member.

2. In an air cleaner, a receptacular body, a cover for the body, a member in which there .is provided an air inlet orifice disposed between and l separable from the body and the cover, and a filter member disposed within the cover and separable from it, the body and the first specified member.

3. In an air cleaner, a receptacular body. a cover for the body, a member in which there is provided an air inlet orifice disposed between and separable from the body and thecover, a filter member disposed within the cover and separable from it, the body and first specified member, and

an inwardly and downwardly directed baille carried by the rst specified member and disposed between the f'llter member and the vair inlet orifice.

4. In an air cleaner, a receptacular body, a cover for the body, a member in which there is provided an air inlet orifice .disposed between and separable from the body and the cover, a lter member disposed within the cover and separable from it, the body and the first specified member, and an inwardly and downwardly inclined wall carried by the first specified member on each side of the air inlet orifice.

.5. In an air cleaner, a receptacular body, a cever for the body, a member in which there is provided an air inlet orifice disposed between and separable from the body and the cover, a filter-member disposed within the cover and member, and an inwardly and downwardly inclined baffle with a perforate inwardly and upwardly inclined extension carried by the rst specified member and disposed between the filter member and the air inlet orifice.

6. In an air cleaner, a receptacular body, air inlet and outlet orifices in the body, a filter element disposed between the air inlet and outlet orifices and above the bottom of the body, a downwardly inclined wall in the body, and a downwardly inclined baille which i's disposed between the mentioned wall and the lter element and defines with the former a passage through which air travels crosswise of the body before it enters the lter element from the air inlet orifice.

7. In an air cleaner, a receptacular member with a downwardly and inwardly inclined section in its side wall which constitutes a liquid reservoir, and a downwardly and inwardly inclined member which is disposed within the re'- ceptacular member and with the downwardly and inwardly inclined section of its side wall defines a passage through which air travels toward the liquid in the reservoir.

8. In an air cleaner, a receptacular member which constitutes a liquid reservoir, and passages through which air enters and leaves the recep tacular member, there being in the receptacular member in the path of the air which enters it a wall disposed at an angle to the vertical and above the bottom of the receptacular member.

9. In an air cleaner, an annular receptacular body, a cover for the body shaped generally like an inverted cup, an annular member in which there is provided an air inlet orice disposed between and separable from the body and the cover, and an annular ilter member which is separable from the body, the cover and the first specified member disposed between the inner wall of the body and the outer wall of the cover.

10. In an air cleaner, an annular receptacular body, a cover for the body shaped generally like an inverted cup, and an annular filter member which is separable from the body and the cover disposed between the inner wall of the former and the outer wall of the latter and clamped between the outer walls of the body and the cover, there being an orice in the air cleaner through which air may enter the body below the cover.

11. In an air cleaner, an annular receptacular body, a cover for the body shaped generally like an inverted cup, an annular lilter member which is separable from the body and the cover disposed between the inner wall of the former and the outer wall of the latter and clamped between the outer walls of the body and the cover, there being an orifice in the air cleaner through which air may enter the body below the cover, and an annular baille which extends from above the orifice downwardly toward the bottom of the body.

l2. In an air cleaner, an annular receptacular body, a cover for the body shaped generally like an inverted cup, an annular filter member which is separable from the body and the cover disposed between the inner wall of the former and the outer wall of the latter and clamped between the outer walls of the body and the cover, there being an oriflce in the air cleaner through which air may enter the body below the cover, and an annular baffle which extends from above the orifice downwardly toward the bottom of the body and has a perforate extension which extends upwardly toward the inner wall of the body.

13. In an air cleaner, an annular receptacula body, a cover for the body shaped generally like an inverted cup, an annular filter member which is separable from the body and the cover disposed between the inner wall of the former and the outer wall of the latter and clamped between the outer walls of the body and the cover, there being an orifice in the air cleaner through which air may enter the body below the cover, and annular baiiles which extend from above and below the orifice downwardly toward the bottom of the body.

HERBERT G. KAMRATH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,272,434 Hastings July 16, 1918 1,349,608 Donaldson Aug. 17, 1920 1,451,329 Dressler Apr. 10, 1923 1,722,689 Taecker July 30, 1929 1,851,427 Hinkle Mar. 29, 1932 1,860,778 Howard May 31, 1932 1,876,368 Walton Sept. 6, 1932 1,888,813 Winslow Nov. 22, 1932 1,951,384 Zander Mar. 20, 1934 1,960,260 Acton May 29, 1934 1,985,481 Cartmell Dec. 25, 1934 1,996,604 Anglemeyer Apr. 2, 1935 2,015,174 Anglemeyer Sept. 24, 1935 2,108,755 Zander Oct. 29, 1935 

